CN115322460A - High-performance tire tread rubber composition, mixing method thereof and prepared tire - Google Patents
High-performance tire tread rubber composition, mixing method thereof and prepared tire Download PDFInfo
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- CN115322460A CN115322460A CN202211127985.5A CN202211127985A CN115322460A CN 115322460 A CN115322460 A CN 115322460A CN 202211127985 A CN202211127985 A CN 202211127985A CN 115322460 A CN115322460 A CN 115322460A
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- rubber
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- styrene
- butadiene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
The invention relates to the field of manufacturing of car tires, and relates to a high-performance tire tread rubber composition, a mixing method thereof and a prepared tire. A high-performance tire tread rubber composition, the mixing formulation of the rubber composition includes rubber component, reinforcement material, processing aid and vulcanizing agent, the rubber component includes styrene-butadiene rubber A styrene content in polymer is 30-50%, vinyl content in butadiene is 20-55%, the styrene-butadiene rubber A LCB index is 2.0-6.0, the weight average molecular weight is 500000-1500000; the styrene-butadiene rubber A contains a plurality of long-chain branched synthetic rubbers, and each rubber molecule at least contains more than 3 terminal alkoxy silane groups capable of interacting with white carbon black. The composition improves the wear performance of high performance tires, improves the dry braking performance, wet braking performance of tires, and maintains the rolling resistance of tires, and achieves a high balance of the above mentioned tire performance.
Description
Technical Field
The invention relates to the field of manufacturing of car tires, and relates to a high-performance tire tread rubber composition, a mixing method thereof and a prepared tire.
Background
The tire is a component which is in direct contact with the ground, has direct influence on the safety performance of the vehicle, and is required to have excellent dry land braking performance and wet land braking performance; in addition, people are more and more conscious of environmental protection, and the reduction of the emission of carbon dioxide is required, so that higher requirements are provided for the fuel efficiency of vehicles, and the reduction of the rolling resistance of tires is required; meanwhile, higher requirements are also put on the abrasion performance of the tire. The above mentioned tire performances are conflicting in pairs.
In the prior art, a large amount of white carbon black is added into a tread rubber material to provide excellent dry braking performance and wet braking performance for a tire, but the white carbon black is simply added, so that the white carbon black is not good in dispersity in the rubber material and can possibly generate negative influence on rolling resistance and abrasion performance of the tire; a large amount of butadiene rubber is added into the rubber material to improve the abrasion performance of the rubber material, but the large amount of the white carbon black rubber material can reduce the dispersibility of the white carbon black in the rubber material and has negative influence on the dry braking performance, the wet braking performance and the rolling resistance of the tire.
The market demands higher performance from various tires, particularly high performance tires, which require a higher balance of tire performance as described above.
Disclosure of Invention
In order to solve the above-mentioned technical problems, an object of the present invention is to provide a high-performance tire tread rubber composition which improves the wear performance of a high-performance tire, improves the dry braking performance and wet braking performance of the tire, and maintains the rolling resistance of the tire, and achieves a high balance of the above-mentioned tire performances.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-performance tire tread rubber composition comprises a rubber component, a reinforcing material, a processing aid and a vulcanizing agent, wherein the rubber component, the reinforcing material, the processing aid and the vulcanizing agent are composed of the following raw material components in parts by weight, based on 100 parts by weight of the rubber component:
the rubber A is styrene-butadiene rubber A, the content of styrene in the styrene-butadiene rubber A in the polymer is 30-50%, the content of vinyl in butadiene is 20-55%, the LCB index of the styrene-butadiene rubber A is 2.0-6.0, and the weight-average molecular weight is 500000-1500000; the styrene-butadiene rubber A contains synthetic rubber with a plurality of long-chain branches, and each rubber molecule at least contains more than 3 terminal alkoxysilane groups capable of interacting with white carbon black;
the rubber B is selected from one or two of styrene-butadiene rubber B and butadiene rubber C, the content of styrene in the styrene-butadiene rubber B in a polymer is 5-25%, the content of vinyl in butadiene is 20-60%, and the LCB index of the styrene-butadiene rubber B is-1.5 to-0.1; the vinyl content of the butadiene rubber C is 3% -25%, the molecular chain end of the butadiene rubber is modified, and the modified group contains an alkoxysilane group capable of interacting with white carbon black.
Preferably, the rubber component, the resin and the reinforcing material are composed of the following raw material components in parts by weight, based on 100 parts by weight of the rubber component:
preferably, the styrene-butadiene rubber a is styrene-butadiene rubber R1441, a product of asahi chemicals corporation; the styrene-butadiene rubber B is styrene-butadiene rubber NS612, a product of Nippon Ruiko company; cis-butadiene rubber C is BR1261, a product of Nippon Runko corporation; the resin is 4401, a product of Keteng polymer company.
Preferably, the carbon black is high-wear-resistant or medium-super wear-resistant carbon black reinforced rubber, the particle size of the carbon black is 20-40nm, the iodine absorption value is 80-160 g/kg, and the compression oil absorption value is 90-15010 -5 m 3 The CTAB adsorption specific surface area is 90-150 to 10 3 m 2 Per kg; the nitrogen adsorption specific surface area (BET) of the white carbon black is 120m 2 /g-260m 2 /g。
Preferably, the silane coupling agent is one or a mixture of two or three of bis (gamma-triethoxysilylpropyl) tetrasulfide, bis (gamma-triethoxysilylpropyl) disulfide and mercapto silane coupling agents.
Preferably, the resin is one or a mixture of two or more of C5, C5/C9, DCPD/C9, terpene phenols (terpene, terpene phenol), aromatic hydrocarbon (styrene, alpha-methyl styrene).
Preferably, the rubber composition further comprises 0.1 to 3 parts of an organic sulfur donor, more preferably 0.1 to 2.0 parts; more preferably, the organic sulfur donor is one or a mixture of two or more of thiuram accelerators and dithioformate accelerators.
Preferably, the mixing formula of the rubber composition also comprises 1.0-3.0 parts of zinc oxide; 1.0-3.0 parts of stearic acid; 6PPD1.0-3.0 parts; 1.0-3.0 parts of protective wax; 0.8-2.0 parts of sulfur, 1.5-3.0 parts of accelerator CZ, 0.1-1.5 parts of accelerator TBzTDS and 0.1-1.5 parts of accelerator TPZ.
Further, the invention also discloses a mixing method of the high-performance tire tread rubber composition, which comprises the following steps:
step 1, mixing, namely mixing by using an internal mixer, simultaneously adding all materials except the vulcanizing agent and the accelerant into the internal mixer for mixing, wherein the mixing time is 180-300 seconds, and the rubber discharge temperature is 130-170 ℃, so as to obtain a mixture Q;
and 2, mixing by using an internal mixer, mixing the mixture Q, the accelerator and the vulcanizing agent together, and obtaining the final tread rubber composition Y.
Furthermore, the invention also discloses a high-performance tire, and the tread of the tire is prepared by vulcanizing the high-performance tire tread rubber composition.
By adopting the technical scheme, the high-performance tire using the rubber composition disclosed by the invention has the advantages that the abrasion performance is improved, the dry braking performance and the wet braking performance of the tire are improved, the rolling resistance of the tire is kept, and the performances of the tire reach high balance.
Detailed Description
Comparative examples and examples of the invention are shown in table 1:
1. the mass of the butadiene rubber, BR and Cis (Cis) butadiene accounts for 94.5 percent of the total weight of the polymer, and the product of Daqing petrochemical company of middle petroleum;
2. cis-butadiene rubber, BR1261, vinyl 10% by weight of the total polymer, product of Nippon Ruiz;
3. styrene-butadiene rubber A, R1441, styrene accounts for 40% of the total weight of the polymer, vinyl accounts for 40% of the total weight of butadiene, LCB index is 3.09, a product of Asahi Kasei corporation;
4. styrene-butadiene rubber B, NS612, styrene accounts for 10 percent of the total weight of the polymer, vinyl accounts for 30 percent of the total weight of butadiene, LCB index is-0.45, and the product is produced by Nippon Ruizziana company;
5. styrene-butadiene rubber E581, wherein the mass of styrene accounts for 35 percent of the total weight of the polymer, and the mass of vinyl accounts for 40 percent of the total weight of butadiene; the product of Asahi Kasei corporation;
6. carbon black 1165MP, BET =165m 2 (iv) solvay chemical;
7. carbon black N234, a product of hangzhou zhongze qingquan industries ltd;
8. alkane coupling agent Si747, jiangsu Qi Xiang chemical products;
9. rubber processing oil V700, a product of Ningbo Han san chemical Co., ltd;
10. resin 4401, kraton corporation;
11. sulfur S200-10, a product of Nissan-free Huasheng rubber New Material science and technology Co., ltd
12. Accelerator CZ, product of Shandong Shanshun chemical Co., ltd
13. Accelerant TBzTD, jiangsu Lian chemical Co., ltd
14. Accelerating agent TPZ, jiangsu Qi Xiang chemical products
15. The remaining materials: 2.0 parts of zinc oxide; 2.0 parts of stearic acid; 6.0 parts of PPD; 2.0 parts of protective wax;
TABLE 1
TABLE 1
The mixing preparation method of the comparative example and the embodiment comprises the following steps:
step 1, mixing, namely mixing by using an internal mixer, simultaneously adding all materials except the vulcanizing agent and the accelerant into the internal mixer for mixing, wherein the mixing time is 180-300 seconds, and the rubber discharge temperature is 130-170 ℃, so as to obtain a mixture Q;
and 2, mixing by using an internal mixer, mixing the mixture Q, the accelerator and the vulcanizing agent together, and obtaining the final tread rubber composition Y.
Method for evaluating performance
Wear performance
The abrasion performance is represented by abrasion loss, the lower the abrasion loss is, the better the abrasion resistance is, the abrasion loss is tested according to GB/T1689, and the abrasion index is shown in a formula (I):
viscoelastic Property test
The test equipment was a dynamic thermomechanical analysis model VR-7120 manufactured by UESHIMA corporation of Japan
The test conditions are frequency of 20Hz, dynamic strain of 0.25 percent and test temperature;
the dry performance is characterized by an index of Tan delta at 30 ℃, the larger the value is, the better the dry performance is, and the index of Tan delta at 30 ℃ is shown in a formula (II).
The wetland performance is characterized by an index of 0 ℃ E ', the larger the numerical value is, the better the wetland performance is, and the index of 0 ℃ E' is shown in a formula (III).
The rolling resistance is characterized by the index of Tan delta at 60 ℃ of the mixture, the lower the value, the lower the rolling resistance, and the index of the rolling resistance is shown in the formula (IV):
LCB index testing method
LCB index- -long chain branching index. The larger the LCB index value, the higher the degree of long chain branching of the rubber. The smaller the LCB index value, the lower the degree of long chain branching of the rubber. The test equipment was a TA Instruments RPA Elite.
And (3) testing conditions are as follows: the test temperature was 120 ℃, the test frequency was 0.2Hz, the test angle was 0.9-90 °, and the LCB index was 59 °.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The high-performance tire tread rubber composition comprises a rubber component, a reinforcing material, a processing aid and a vulcanizing agent, and is characterized in that the rubber component, the resin and the reinforcing material comprise the following raw material components in parts by weight based on 100 parts by weight of the rubber component:
60-80 parts of rubber A;
20-40 parts of rubber B;
0-30 parts of carbon black;
50-120 parts of white carbon black;
5.0-20 parts of a silane coupling agent;
5.0-40 parts of resin;
the rubber A is styrene-butadiene rubber A, the content of styrene in the styrene-butadiene rubber A in a polymer is 30-50%, the content of vinyl in butadiene is 30-50%, the LCB index of the styrene-butadiene rubber A is 2.0-6.0, and the weight-average molecular weight is 500000-1500000; the styrene-butadiene rubber A contains synthetic rubber with a plurality of long-chain branches, and each rubber molecule at least contains more than 3 terminal alkoxysilane groups capable of interacting with white carbon black;
the rubber B is selected from one or a mixture of two of styrene-butadiene rubber B and butadiene rubber C, the content of styrene in the styrene-butadiene rubber B in a polymer is 5-20%, the content of vinyl in butadiene is 20-40%, and the LCB index of the styrene-butadiene rubber B is minus 1.0 to minus 0.1; the vinyl content of the butadiene rubber C is 3% -20%, the molecular chain end of the butadiene rubber is modified, and the modified group contains an alkoxysilane group capable of interacting with white carbon black.
2. The high-performance tire tread rubber composition according to claim 1, wherein the rubber component, the resin and the reinforcing material are composed of the following raw material components in parts by weight, based on 100 parts by weight of the rubber component:
65-75 parts of rubber A;
25-35 parts of rubber B;
1.0-10 parts of carbon black;
60-100 parts of white carbon black;
6.0-12 parts of a silane coupling agent;
10-30 parts of resin.
3. The high performance tire tread rubber composition according to claim 1 or 2, wherein the styrene-butadiene rubber A is styrene-butadiene rubber R1441, a product of Asahi Kasei corporation; the styrene-butadiene rubber B is styrene-butadiene rubber NS612, a product of Nippon Ruizhong Co; cis-butadiene rubber C is BR1261, a product of Nippon Ruizhong corporation; the resin is resin 4401, a product of kraton polymers.
4. The high-performance tire tread rubber composition as claimed in claim 1 or 2, wherein the carbon black is a high-wear or medium-super wear-resistant carbon black reinforced rubber, the particle size of the carbon black is 20-40nm, the iodine absorption value is 80-160 g/kg, and the compression oil absorption value is 90-15010 -5 m 3 The CTAB adsorption specific surface area is 90-150 to 10 3 m 2 Per kg; the nitrogen adsorption specific surface area (BET) of the white carbon black is 120m 2 /g-260m 2 /g。
5. The high performance tire tread rubber composition of claim 1 or 2, wherein the silane coupling agent is one or two or a mixture of three of bis (γ -triethoxysilylpropyl) tetrasulfide, bis (γ -triethoxysilylpropyl) disulfide, mercapto silane coupling agents.
6. The high performance tire tread rubber composition according to claim 1 or 2, wherein the resin is one or a mixture of two or more of C5, C5/C9, DCPD/C9, terpene phenols (terpene, terpene phenol), aromatic hydrocarbons (styrene, α -methylstyrene) and the like.
7. The high performance rubber composition for tire tread according to claim 1 or 2, wherein the compounding formulation of the rubber composition further comprises 0.1 to 3 parts of an organic sulfur donor, preferably 0.1 to 2.0 parts; preferably, the organic sulfur donor is one or a mixture of two or more of thiuram accelerators and dithioformate accelerators.
8. The high performance tire tread rubber composition according to claim 1 or 2, wherein the compounding formulation of the rubber composition further comprises zinc oxide 1.0 to 3.0 parts; 1.0-3.0 parts of stearic acid; 6PPD1.0-3.0 parts; 1.0-3.0 parts of protective wax; 0.8-2.0 parts of sulfur, 1.5-3.0 parts of accelerator CZ, 0.1-1.5 parts of accelerator TBzTD and 0.1-1.5 parts of accelerator TPZ.
9. A method of mixing a high performance tire tread rubber composition according to any one of claims 1 to 8, comprising the steps of:
step 1, mixing, namely mixing by using an internal mixer, simultaneously adding all materials except the vulcanizing agent and the accelerant into the internal mixer for mixing, wherein the mixing time is 180-300 seconds, and the rubber discharge temperature is 130-170 ℃, so as to obtain a mixture Q;
and 2, mixing by using an internal mixer, mixing the mixture Q, the accelerator and the vulcanizing agent together, and obtaining the final tread rubber composition Y.
10. A high performance tire, wherein the tread of the tire is prepared by vulcanizing a high performance tire tread rubber composition according to any one of claims 1 to 8.
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Citations (7)
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|---|---|---|---|---|
| JP2014095014A (en) * | 2012-11-08 | 2014-05-22 | Sumitomo Rubber Ind Ltd | Rubber composition for tread and pneumatic tire |
| CN109134978A (en) * | 2018-07-24 | 2019-01-04 | 浦林成山（青岛）工业研究设计有限公司 | A kind of high-performance tire tread mix and preparation method thereof and tire |
| CN112409662A (en) * | 2020-11-16 | 2021-02-26 | 四川轮胎橡胶（集团）股份有限公司 | Composition for preparing rubber compound, rubber compound and preparation method thereof, and tire |
| CN113462049A (en) * | 2021-07-20 | 2021-10-01 | 正新橡胶（中国）有限公司 | Rubber composition for tire tread and preparation method thereof |
| WO2021241755A1 (en) * | 2020-05-29 | 2021-12-02 | 横浜ゴム株式会社 | Rubber composition for tire, and tire |
| CN114230884A (en) * | 2021-12-28 | 2022-03-25 | 中策橡胶集团股份有限公司 | High-performance car tire tread rubber composition, mixing method thereof and car tire |
| CN114957820A (en) * | 2022-04-27 | 2022-08-30 | 中策橡胶集团股份有限公司 | Tread rubber composition, mixing method and application thereof, and tire |
-
2022
- 2022-09-16 CN CN202211127985.5A patent/CN115322460B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2014095014A (en) * | 2012-11-08 | 2014-05-22 | Sumitomo Rubber Ind Ltd | Rubber composition for tread and pneumatic tire |
| CN109134978A (en) * | 2018-07-24 | 2019-01-04 | 浦林成山（青岛）工业研究设计有限公司 | A kind of high-performance tire tread mix and preparation method thereof and tire |
| WO2021241755A1 (en) * | 2020-05-29 | 2021-12-02 | 横浜ゴム株式会社 | Rubber composition for tire, and tire |
| CN112409662A (en) * | 2020-11-16 | 2021-02-26 | 四川轮胎橡胶（集团）股份有限公司 | Composition for preparing rubber compound, rubber compound and preparation method thereof, and tire |
| CN113462049A (en) * | 2021-07-20 | 2021-10-01 | 正新橡胶（中国）有限公司 | Rubber composition for tire tread and preparation method thereof |
| CN114230884A (en) * | 2021-12-28 | 2022-03-25 | 中策橡胶集团股份有限公司 | High-performance car tire tread rubber composition, mixing method thereof and car tire |
| CN114957820A (en) * | 2022-04-27 | 2022-08-30 | 中策橡胶集团股份有限公司 | Tread rubber composition, mixing method and application thereof, and tire |
Non-Patent Citations (1)
| Title |
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